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An acid HA ionises as, HA iff H^+ + A^- ...

An acid HA ionises as,
`HA iff H^+ + A^-` The pH of 1.0 M solution is 5. Its dissociation constant will be

A

`1xx10^(-10)`

B

5

C

`5xx10^(-8)`

D

`1xx10^(-5)`

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The correct Answer is:
A
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    A
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    B
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    B
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